Thank you for your reply.
Ok, I think I wasn't clear enough. You are right, there are no jpg in the
old.zip.
But is there a way to combine both mirrors (one with just the blogentries from
the old.zip - thats the only place I found them) and the jpgs in the other
folders from the updated mirror, so that I get a browseable Website again? 

thanks a lot!
kungfusion